Union County, Ohio, United States
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- Union County
- County
- Located in central Ohio, 32 km (20 mi) northwest of Columbus; County Seat: Marysville.
- Established on 10 January 1820, effective on 1 April 1820; named because it was formed from portions of several counties.
- 40.300059040° 18' 00.2"N-83.383255083° 22' 59.7"W
- 31,969
- 313 m
- 942526810
- Updated Apr 22, 2020